This chapter calls for new professional responsibility in music education amidst the deepening ‘great regression’ manifested through the rapidly increasing fatigue with democracy and rejection of cultural heterogeneity and globalisation, and the consequential rise of xenophobia, societal polarization, authoritarianism, and populist returns to territorial tribes and the lost national past. The authors ask: What does this situation require from music educators? The chapter suggests a transition towards transforming established professional mental models, towards a new kind of self-reflexive ecopolitical awareness and professionalism that helps recognise how questions of sustainability are inextricably interconnected with issues of justice and fairness. Such ecopolitically aware professionalism expands music educators’ current boundaries of professional responsibility and prompts them to work within a ‘bigger picture’ to reimagine music education that can counter the interdependent megatrends that shake societal stability and threaten established institutions. The chapter asks provocatively: “What would happen if all music educators committed to a practice that promoted a relational and ecologically aware sustainability”?